The Firefly Squid (Watasenia scintillans) inhabits the Western Pacific and is famously found in Toyama Bay, Japan. The 3-inch long creatures employ bioluminescent glands in each tentacle to attract and hunt prey. Surprisingly, this is the only species of of cephalopod that is suspected of having color vision. [Sparkling Enope Wiki via Buzzfeed - Composite Image (clockwise from left): Slutgarden, seavenger, pinktentacle]